package com.atguigu.mapReduce.WordCount;

import com.atguigu.mapReduce.partitioner.ProvincePartitioner;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;


import java.io.IOException;

public class WordCountDriver {
    public static void main(String[] args) throws IOException, InterruptedException, ClassNotFoundException {
        // 1.获取Job
        Configuration configuration = new Configuration();
        Job job = Job.getInstance(configuration);
        // 2.设置jar包路径
        job.setJarByClass(WordCountDriver.class);
        // 3.关联mapper和reducer
        job.setMapperClass(WordCountMapper.class);
        job.setReducerClass(WordCountReducer.class);
        // 4.设置mapper输出的kv类型
        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(LongWritable.class);
        // 5.设置最终输出的kv类型
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(LongWritable.class);
        // 6.设置输入路径和输出路径
        FileInputFormat.setInputPaths(job, new Path("/Users/cokerzhou/Documents/UGit/Hadoop/tmp/wc.txt"));
        FileOutputFormat.setOutputPath(job, new Path("/Users/cokerzhou/Documents/UGit/Hadoop/output"));
        // 7.提交Job
        boolean result = job.waitForCompletion(true);
        System.exit(result ? 0 : 1);
    }
}
